Ultrasonic mosquito repellent bracelet, USB rechargeable waterof portable anti-mosquito watch

Color: black, red Material: skin-friendly and soft TPU material Voltage: DC / 5V Rated power: 1W Product size: 42 * 24 * 12mm Waterproof rating: IP67 Lithium battery capacity: 90mAH Product power supply: built-in battery Charging method: USB Endurance working time: 60 hours